/* CSS Variables: 高饱和艳彩风 + 浅色底深色字 */
    :root {
      --primary: #6366f1; /* 高饱和紫 */
      --secondary: #ec4899; /* 艳丽粉 */
      --accent: #14b8a6; /* 霓虹青 */
      --warning: #f59e0b; /* 艳黄 */
      --dark: #0f172a;
      --text: #334155;
      --light: #f8fafc;
      --white: #ffffff;
      --border: #e2e8f0;
      --primary-gradient: linear-gradient(135deg, #6366f1 0%, #ec4899 100%);
      --accent-gradient: linear-gradient(135deg, #3b82f6 0%, #14b8a6 100%);
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
      --shadow-lg: 0 10px 15px -3px rgba(99, 102, 241, 0.15), 0 4px 6px -2px rgba(236, 72, 153, 0.1);
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      --container-width: 1200px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      color: var(--text);
      background-color: var(--light);
      line-height: 1.6;
      overflow-x: hidden;
    }

    /* Container Standard */
    .container {
      width: 100%;
      max-width: var(--container-width);
      margin: 0 auto;
      padding: 0 24px;
    }

    section {
      padding: 80px 0;
      position: relative;
    }

    /* Header & Navigation */
    header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      height: 72px;
      background-color: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(8px);
      border-bottom: 1px solid var(--border);
      z-index: 1000;
      box-shadow: var(--shadow-sm);
    }

    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 100%;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .brand img {
      height: 40px;
      width: auto;
    }

    .brand-name {
      font-size: 20px;
      font-weight: 800;
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    nav.nav-menu {
      display: flex;
    }

    .nav-link {
      text-decoration: none;
      color: var(--dark);
      font-size: 14px;
      font-weight: 500;
      transition: var(--transition);
      padding: 6px 12px;
      border-radius: 6px;
    }

    .nav-link:hover {
      color: var(--primary);
      background-color: rgba(99, 102, 241, 0.05);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .btn-nav-primary {
      background: var(--primary-gradient);
      color: var(--white);
      border: none;
      padding: 8px 18px;
      border-radius: 8px;
      font-size: 14px;
      font-weight: 600;
      text-decoration: none;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .btn-nav-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 4px 12px rgba(236, 72, 153, 0.3);
    }

    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      cursor: pointer;
      color: var(--dark);
    }

    /* Hero Section - 首屏无图片 */
    #hero {
      padding-top: 150px;
      padding-bottom: 100px;
      background: radial-gradient(circle at 80% 20%, rgba(236, 72, 153, 0.08) 0%, rgba(99, 102, 241, 0.05) 50%, rgba(255,255,255,0) 100%), var(--white);
      text-align: center;
      overflow: hidden;
    }

    .hero-badge {
      display: inline-block;
      padding: 6px 16px;
      border-radius: 50px;
      background: rgba(99, 102, 241, 0.1);
      color: var(--primary);
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 24px;
      border: 1px solid rgba(99, 102, 241, 0.2);
    }

    h1.hero-title {
      font-size: 48px;
      font-weight: 800;
      line-height: 1.25;
      color: var(--dark);
      margin-bottom: 24px;
      letter-spacing: -1px;
    }

    h1.hero-title span {
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-subtitle {
      font-size: 18px;
      color: var(--text);
      max-width: 800px;
      margin: 0 auto 40px;
    }

    .hero-btn-group {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
    }

    .btn-hero-main {
      background: var(--primary-gradient);
      color: var(--white);
      text-decoration: none;
      padding: 14px 32px;
      border-radius: 8px;
      font-size: 16px;
      font-weight: 700;
      box-shadow: var(--shadow-lg);
      transition: var(--transition);
    }

    .btn-hero-main:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 24px rgba(236, 72, 153, 0.4);
    }

    .btn-hero-sub {
      background: var(--white);
      color: var(--dark);
      text-decoration: none;
      padding: 14px 32px;
      border-radius: 8px;
      font-size: 16px;
      font-weight: 700;
      border: 2px solid var(--border);
      transition: var(--transition);
    }

    .btn-hero-sub:hover {
      border-color: var(--primary);
      color: var(--primary);
      background-color: rgba(99, 102, 241, 0.02);
    }

    /* Data Stats Component */
    .hero-stats {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      margin-top: 80px;
    }

    .stat-card {
      background: var(--white);
      padding: 24px;
      border-radius: 12px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .stat-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: rgba(99, 102, 241, 0.3);
    }

    .stat-num {
      font-size: 36px;
      font-weight: 800;
      background: var(--accent-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 8px;
    }

    .stat-label {
      font-size: 14px;
      color: var(--text);
      font-weight: 500;
    }

    /* Section Header */
    .section-header {
      text-align: center;
      margin-bottom: 50px;
    }

    .section-header h2 {
      font-size: 32px;
      font-weight: 800;
      color: var(--dark);
      margin-bottom: 16px;
      position: relative;
      display: inline-block;
    }

    .section-header h2::after {
      content: '';
      position: absolute;
      bottom: -6px;
      left: 50%;
      transform: translateX(-50%);
      width: 60px;
      height: 4px;
      background: var(--primary-gradient);
      border-radius: 2px;
    }

    .section-header p {
      color: var(--text);
      font-size: 16px;
      max-width: 600px;
      margin: 0 auto;
    }

    /* Platforms Tags */
    .platforms-wrap {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin: 20px auto 0;
      max-width: 900px;
    }

    .platform-tag {
      background: var(--white);
      color: var(--text);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 12px;
      font-weight: 600;
      border: 1px solid var(--border);
      transition: var(--transition);
    }

    .platform-tag:hover {
      background: var(--primary-gradient);
      color: var(--white);
      border-color: transparent;
      transform: scale(1.05);
    }

    /* Grid Layouts */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }

    /* Common Card Styling */
    .feature-card {
      background: var(--white);
      padding: 30px;
      border-radius: 16px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .feature-card:hover {
      transform: translateY(-8px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(99, 102, 241, 0.4);
    }

    .card-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: var(--primary-gradient);
      color: var(--white);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-bottom: 20px;
    }

    .feature-card h3 {
      font-size: 20px;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 12px;
    }

    .feature-card p {
      font-size: 14px;
      color: var(--text);
    }

    /* About & Agent Section */
    .about-content {
      align-items: center;
    }

    .about-text h3 {
      font-size: 24px;
      margin-bottom: 16px;
      color: var(--dark);
    }

    .about-list {
      list-style: none;
      margin: 20px 0;
    }

    .about-list li {
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 15px;
    }

    .about-list li::before {
      content: '✔';
      color: var(--accent);
      font-weight: bold;
    }

    .agent-card {
      background: linear-gradient(135deg, rgba(236, 72, 153, 0.05) 0%, rgba(99, 102, 241, 0.05) 100%);
      border: 2px dashed var(--primary);
    }

    /* Workflow TimeLine */
    .timeline {
      position: relative;
      max-width: 800px;
      margin: 0 auto;
    }

    .timeline::after {
      content: '';
      position: absolute;
      width: 4px;
      background: var(--border);
      top: 0;
      bottom: 0;
      left: 50%;
      margin-left: -2px;
    }

    .timeline-item {
      padding: 10px 40px;
      position: relative;
      background-color: inherit;
      width: 50%;
    }

    .timeline-item::after {
      content: '';
      position: absolute;
      width: 20px;
      height: 20px;
      right: -10px;
      background-color: var(--white);
      border: 4px solid var(--primary);
      top: 15px;
      border-radius: 50%;
      z-index: 1;
    }

    .left {
      left: 0;
      text-align: right;
    }

    .right {
      left: 50%;
    }

    .right::after {
      left: -10px;
    }

    .timeline-content {
      padding: 20px 30px;
      background-color: var(--white);
      position: relative;
      border-radius: 12px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
    }

    /* Comparison Table Component */
    .table-container {
      width: 100%;
      overflow-x: auto;
      background: var(--white);
      border-radius: 16px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      margin-top: 30px;
    }

    table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }

    th, td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border);
    }

    th {
      background-color: rgba(99, 102, 241, 0.05);
      color: var(--dark);
      font-weight: 700;
    }

    tr:last-child td {
      border-bottom: none;
    }

    .highlight-row {
      background-color: rgba(236, 72, 153, 0.02);
    }

    .badge-star {
      color: var(--warning);
      font-weight: bold;
    }

    .score-high {
      color: var(--secondary);
      font-weight: 800;
    }

    /* Client Showcase & Image handling */
    .showcase-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .showcase-card {
      background: var(--white);
      border-radius: 16px;
      overflow: hidden;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
    }

    .showcase-img-container {
      position: relative;
      width: 100%;
      aspect-ratio: 16/10;
      background-color: #f1f5f9;
      overflow: hidden;
    }

    .showcase-img-container img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }

    .showcase-card:hover .showcase-img-container img {
      transform: scale(1.05);
    }

    .showcase-info {
      padding: 20px;
    }

    .showcase-tag {
      display: inline-block;
      padding: 4px 10px;
      border-radius: 4px;
      background: rgba(20, 184, 166, 0.1);
      color: var(--accent);
      font-size: 12px;
      font-weight: 600;
      margin-bottom: 10px;
    }

    /* Token Price Reference Grid */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .token-card {
      background: var(--white);
      border-radius: 12px;
      border: 1px solid var(--border);
      padding: 20px;
      text-align: center;
      transition: var(--transition);
    }

    .token-card:hover {
      box-shadow: var(--shadow-md);
      border-color: var(--accent);
    }

    .token-price {
      font-size: 24px;
      font-weight: 800;
      color: var(--accent);
      margin: 10px 0;
    }

    /* FAQ Collapsible Panel */
    .faq-wrapper {
      max-width: 800px;
      margin: 0 auto;
    }

    .faq-item {
      background: var(--white);
      border: 1px solid var(--border);
      border-radius: 8px;
      margin-bottom: 12px;
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-header {
      padding: 18px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-weight: 600;
      color: var(--dark);
      transition: var(--transition);
    }

    .faq-header:hover {
      background-color: rgba(99, 102, 241, 0.02);
    }

    .faq-icon {
      font-size: 18px;
      transition: var(--transition);
    }

    .faq-body {
      padding: 0 24px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      color: var(--text);
      font-size: 14px;
      border-top: 0 solid var(--border);
    }

    .faq-item.active .faq-body {
      padding: 18px 24px;
      max-height: 200px;
      border-top: 1px solid var(--border);
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: var(--primary);
    }

    /* User Comments / Testimonials */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .testimonial-card {
      background: var(--white);
      padding: 24px;
      border-radius: 16px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      position: relative;
    }

    .testimonial-text {
      font-style: italic;
      color: var(--text);
      font-size: 14px;
      margin-bottom: 20px;
      position: relative;
    }

    .testimonial-user {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .user-avatar-placeholder {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--accent-gradient);
      color: var(--white);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 16px;
    }

    .user-info h4 {
      font-size: 14px;
      color: var(--dark);
    }

    .user-info span {
      font-size: 12px;
      color: var(--text);
      opacity: 0.8;
    }

    /* Form & Smart Matching Component */
    .form-section-container {
      background: var(--white);
      border-radius: 20px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-lg);
      padding: 40px;
      max-width: 700px;
      margin: 0 auto;
    }

    .form-group {
      margin-bottom: 20px;
    }

    .form-group label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      color: var(--dark);
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border);
      border-radius: 8px;
      font-size: 14px;
      color: var(--dark);
      background-color: var(--light);
      transition: var(--transition);
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
      background-color: var(--white);
    }

    .btn-submit {
      width: 100%;
      background: var(--primary-gradient);
      color: var(--white);
      border: none;
      padding: 14px;
      border-radius: 8px;
      font-size: 16px;
      font-weight: 700;
      cursor: pointer;
      box-shadow: var(--shadow-md);
      transition: var(--transition);
    }

    .btn-submit:hover {
      box-shadow: 0 6px 18px rgba(236, 72, 153, 0.35);
      transform: translateY(-2px);
    }

    /* Knowledge & Articles Section */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }

    .article-card {
      background: var(--white);
      padding: 24px;
      border-radius: 12px;
      border: 1px solid var(--border);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }

    .article-card:hover {
      border-color: var(--primary);
      transform: translateY(-3px);
    }

    .article-card h3 {
      font-size: 18px;
      margin-bottom: 12px;
    }

    .article-link {
      color: var(--primary);
      text-decoration: none;
      font-weight: 600;
      font-size: 14px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      margin-top: 15px;
    }

    .article-link:hover {
      text-decoration: underline;
    }

    /* Troubleshooting Grid */
    .troubleshoot-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .troubleshoot-card {
      background: var(--white);
      border-left: 4px solid var(--warning);
      padding: 20px;
      border-radius: 0 12px 12px 0;
      border-top: 1px solid var(--border);
      border-right: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }

    .troubleshoot-card h4 {
      margin-bottom: 8px;
      color: var(--dark);
    }

    /* AI Glossary */
    .glossary-wrap {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .glossary-card {
      background: var(--white);
      padding: 16px;
      border-radius: 8px;
      border: 1px solid var(--border);
    }

    .glossary-term {
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 6px;
    }

    /* Service Network */
    .network-container {
      background: linear-gradient(135deg, rgba(20, 184, 166, 0.03) 0%, rgba(99, 102, 241, 0.03) 100%);
      padding: 40px;
      border-radius: 20px;
      border: 1px solid var(--border);
    }

    .network-list {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 30px;
    }

    .network-item {
      padding: 12px;
      background: var(--white);
      border-radius: 6px;
      border: 1px solid var(--border);
      text-align: center;
      font-weight: 600;
    }

    /* Contact & QR layout */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }

    .contact-info-list {
      list-style: none;
      margin-bottom: 30px;
    }

    .contact-info-list li {
      margin-bottom: 15px;
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 16px;
    }

    .qr-box-container {
      display: flex;
      gap: 30px;
      justify-content: center;
    }

    .qr-card {
      background: var(--white);
      padding: 20px;
      border-radius: 12px;
      border: 1px solid var(--border);
      text-align: center;
      box-shadow: var(--shadow-sm);
    }

    .qr-card img {
      width: 130px;
      height: 130px;
      display: block;
      margin: 0 auto 10px;
    }

    .qr-card p {
      font-size: 13px;
      font-weight: 600;
      color: var(--dark);
    }

    /* Footer Styles */
    footer {
      background-color: var(--dark);
      color: rgba(255, 255, 255, 0.7);
      padding: 60px 0 20px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1.5fr;
      gap: 50px;
      margin-bottom: 40px;
    }

    .footer-about h3, .footer-links h3, .footer-contact h3 {
      color: var(--white);
      font-size: 16px;
      margin-bottom: 20px;
      position: relative;
    }

    .footer-links ul {
      list-style: none;
    }

    .footer-links ul li {
      margin-bottom: 10px;
    }

    .footer-links ul li a {
      color: rgba(255, 255, 255, 0.7);
      text-decoration: none;
      transition: var(--transition);
      font-size: 14px;
    }

    .footer-links ul li a:hover {
      color: var(--primary);
    }

    .friendship-links {
      margin-top: 20px;
      padding-top: 20px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

    .friendship-links a {
      color: rgba(255, 255, 255, 0.6);
      text-decoration: none;
      margin-right: 15px;
      font-size: 13px;
      display: inline-block;
      margin-bottom: 8px;
    }

    .friendship-links a:hover {
      color: var(--secondary);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 20px;
      text-align: center;
      font-size: 13px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 15px;
    }

    .footer-bottom a {
      color: rgba(255, 255, 255, 0.7);
      text-decoration: none;
    }

    /* Floating components */
    .floating-contact {
      position: fixed;
      right: 24px;
      bottom: 24px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: var(--white);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      position: relative;
      transition: var(--transition);
      text-decoration: none;
      color: var(--dark);
    }

    .float-btn:hover {
      background: var(--primary-gradient);
      color: var(--white);
      transform: translateY(-2px);
    }

    .float-btn-qr {
      position: absolute;
      right: 60px;
      bottom: 0;
      background: var(--white);
      padding: 16px;
      border-radius: 12px;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border);
      display: none;
      text-align: center;
    }

    .float-btn-qr img {
      width: 120px;
      height: 120px;
      display: block;
      margin-bottom: 8px;
    }

    .float-btn-qr p {
      font-size: 12px;
      color: var(--dark);
      white-space: nowrap;
    }

    .float-btn:hover .float-btn-qr {
      display: block;
    }

    /* Responsive Design */
    @media (max-width: 1024px) {
      .grid-3, .showcase-grid, .testimonial-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .token-grid, .glossary-wrap, .network-list {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      nav.nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background-color: var(--white);
        border-bottom: 1px solid var(--border);
        padding: 20px;
        box-shadow: var(--shadow-md);
      }
      nav.nav-menu.active {
        display: flex;
      }
      .nav-actions {
        display: none;
      }
      h1.hero-title {
        font-size: 32px;
      }
      .hero-stats {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3, .grid-2, .showcase-grid, .testimonial-grid, .token-grid, .glossary-wrap, .troubleshoot-grid, .network-list {
        grid-template-columns: 1fr;
      }
      .timeline::after {
        left: 31px;
      }
      .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
      }
      .timeline-item::after {
        left: 21px;
        right: auto;
      }
      .left {
        text-align: left;
      }
      .left::after {
        left: 21px;
      }
      .right {
        left: 0%;
      }
      .contact-wrapper {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
      }
    }